Improve Glances start time by disabling Docker and Podman version getter - Related to #1985

glances/plugins/containers/glances_docker.py

@@ -221,6 +221,7 @@ class DockerContainersExtension:
         self.client = None
         self.ext_name = "containers (Docker)"
         self.stats_fetchers = {}
+
         self.connect()
 
     def connect(self):
@@ -233,6 +234,11 @@ class DockerContainersExtension:
             logger.error("{} plugin - Can't connect to Docker ({})".format(self.ext_name, e))
             self.client = None
 
+    def update_version(self):
+        # Long and not useful anymore because the information is no more displayed in UIs
+        # return self.client.version()
+        return {}
+
     def stop(self):
         # Stop all streaming threads
         for t in itervalues(self.stats_fetchers):
@@ -240,23 +246,12 @@ class DockerContainersExtension:
 
     def update(self, all_tag):
         """Update Docker stats using the input method."""
-        # Docker version
-        # Example: {
-        #     "KernelVersion": "3.16.4-tinycore64",
-        #     "Arch": "amd64",
-        #     "ApiVersion": "1.15",
-        #     "Version": "1.3.0",
-        #     "GitCommit": "c78088f",
-        #     "Os": "linux",
-        #     "GoVersion": "go1.3.3"
-        # }
-        try:
-            version_stats = self.client.version()
-        except Exception as e:
-            # Correct issue#649
-            logger.error("{} plugin - Can't get Docker version ({})".format(self.ext_name, e))
+
+        if not self.client:
             return {}, []
 
+        version_stats = self.update_version()
+
         # Update current containers list
         try:
             # Issue #1152: Docker module doesn't export details about stopped containers

glances/plugins/containers/glances_podman.py

@@ -219,17 +219,12 @@ class PodmanContainersExtension:
         if import_podman_error_tag:
             raise Exception("Missing libs required to run Podman Extension (Containers)")
 
-        self.ext_name = "containers (Podman)"
-
         self.client = None
+        self.ext_name = "containers (Podman)"
         self.podman_sock = podman_sock
         self.pods_stats_fetcher = None
         self.container_stats_fetchers = {}
 
-        # Cache version details as the version call is costly (in terms of time)
-        self._version = {}
-        self._last_version_update = 0
-
         self.connect()
 
     def connect(self):
@@ -238,13 +233,12 @@ class PodmanContainersExtension:
             self.client = PodmanClient(base_url=self.podman_sock)
         except Exception as e:
             logger.error("{} plugin - Can't connect to Podman ({})".format(self.ext_name, e))
+            self.client = None
 
     def update_version(self):
-        try:
-            self._version = self.client.version()
-            self._last_version_update = time.time()
-        except Exception as e:
-            logger.error("{} plugin - Can't get Podman version ({})".format(self.ext_name, e))
+        # Long and not useful anymore because the information is no more displayed in UIs
+        # return self.client.version()
+        return {}
 
     def stop(self):
         # Stop all streaming threads
@@ -257,9 +251,10 @@ class PodmanContainersExtension:
     def update(self, all_tag):
         """Update Podman stats using the input method."""
 
-        curr_time = time.time()
-        if curr_time - self._last_version_update > 300:  # 300 seconds
-            self.update_version()
+        if not self.client:
+            return {}, []
+
+        version_stats = self.update_version()
 
         # Update current containers list
         try:
@@ -270,7 +265,7 @@ class PodmanContainersExtension:
                 self.pods_stats_fetcher = PodmanPodStatsFetcher(self.client.pods)
         except Exception as e:
             logger.error("{} plugin - Can't get containers list ({})".format(self.ext_name, e))
-            return self._version, []
+            return version_stats, []
 
         # Start new thread for new container
         for container in containers:
@@ -298,7 +293,7 @@ class PodmanContainersExtension:
                 stats["pod_name"] = pod_stats[stats["Id"][:12]]["name"]
                 stats["pod_id"] = pod_stats[stats["Id"][:12]]["pod_id"]
 
-        return self._version, container_stats
+        return version_stats, container_stats
 
     @property
     def key(self):